Burner for liquid fuel.



Rw 9 l Rw. R.. A M D E T N E T A P L E S S U R um T. au. 9 om. 4 1 oo nw N BURNER POR LIQUID FUEL.

APPLICATION FILED MAY 22, 19.05.

Atty;

Inverti?) r.

003. J f Z. /f .Wd l .www m w Nk FU mw. Z J w JOSEPH R. RUSSELL, OF CHICAGO, ILLINOIS.

BURNER FOR LIQUID FUEL.

Specification of Letters Patent.

Patented March 6, 1906.

Application iled May 22, 1905. Serial No. 261,520.

To a/ZZ whom it may concer-71,:

Be it known that I, JOSEPH R. RUssELL,'a citizen ofthe United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented-a new and useful Improvement in Burners for Liquid Fuel, of which the following is a complete specification.

This invention is designed with reference to the consum tion of hydrocarbon oils in furnaces used or welding, brazing, or other like purposes in which a high heat is required.

The object in view is to provide a burner simple in construction and efficient in operation and one in which the fiame can be easil regulated not only in volume, but to suit the distance of the work from the burner and in variable amounts to any desired portion or side of the furnace.

Other subordinate improvements will be set forth in the Jfollowing description and related in the appended claims.

The preferred construction of the improvement is illustrated in the accompanying drawings, in which- Figure 1 represents a side elevation, partly in section, of a burner embodying my invention. Fig. 2 is an elevation of the burner as viewed from the left-hand side of Fig. 1. Fig. 3 is a plan section taken as indicated by the line 3 3 in Fig. 1. Fig. 4 represents a modification of the cone-stem and bearing for same, the modification consisting in providing an eccentric bearing for the said conestem, and thereby increasin the latitude of adjustment of the cone; and Fig. 5 is a diagrammatic view illustrating different positions to which the cone has been moved by the offset stem alone, the eccentric sleeve alone, and by the combined movement of both.

Referring to the drawings, 1 designates the body of the burner, which forms the mixingchamber, although, strictly speaking, the mixing occurs below the oil-inlet. The airinlet is at 2 and the discharge-opening at 3, the air following along the course indicated by the arrows. The air may be supplied under the required degree of pressure from any suitable source, the lflange 4 affording connecting means with the supply-pipe. .The lower end of the burner, or that portion below the flange 5, is designed to connect with the furnace immediately over the fire-pot, the Said flange 5 affording the connecting means the vertically-extending stem 7, to the upper end of which is secured the hand-Wheel 72 for turning said stem. The stem is threaded at its upper end and is received by a correspondingly-threaded boss 8, integral with the upper end of the burner-body. A supplementary stem-support 9 is provided intermediate of the length of said stern, as clearly illustrated in Fig. 1. Below the stem-support 9 an offset 7 is formed in the cone-stem. 7, this offset enabling the cone to be moved to various positions in the discharge-outlet. This feature is of great importance, since in operation it is frequently, in fact almost constantly, desired to heat a certain portion of the furnace or the work more intensely at one place than another. i By. the movement of the cone through the offset stem or equivalent means the size ofthe opening on the side requiring a high heat can be enlarged or diminished at the will of the operator.

To increase the latitude and fiexibility of this adjustment, a double eccentric effect can be secured by mounting the offset stem 7 in the eccentric sleeve 10, as shown in the modified form set forth in Fig. 4. This sleeve l() extends downward to the supplementary support 9, the support and the boss 8 being simply drilled larger to receive said eccentric sleeve. be turned, and thus increase the range of movement of theoffset stem.

In the diagrammatic view shown in Fig. 5 the large circle 11 represents the dischargeoutlet and the circles l2 the cone. The small circle 13 represents the path of movement of the cone-center about the center of the stem, the radius of the circle representing the extent of the offset. The small circle 14 represents the path of movement of the conestem about the center of the eccentric sleeve 10. The cone-circle 12 (shown in full lines) represents the cone in its central position in the opening 3. The dotted circle 12 represents the cone in its farthest position to the right and 122 the same to theV left.

123 is the position of the cone when moved transversely to the last-described movement by the combined effect of the cone-stem and eccentric sleeve.

The oil is introduced through the pipe 15,

The handle 10 enables the sleeve to IOO IIO

which may be fed by gravity or any other suitable means which will furnish a practi cally uniform pressure. The conical point l5 of this pipe terminates adjacent to the conestem 7, so that the oil will impinge said stem7 after which capillary attraction and gravity will cause it to follow the stem to the apex of the cone The oil is thus exposed to the inrushing current of air on all sides, and when descending the cone it becomes rapidly attenuated, owing to the increased surface over which it is spread and the impinging air-currents striking it so direct. Before reaching the lower margin of the cone the oil will have been all taken up and the air thoroughly carbureted, after which it will pass into the furnace for combustion. This form of mixing device has been found very efficient, so eflicient that the hot portion of the flame or the zone of intense combustion is brought to a distance less than half that found in ordinary burners and with a corresponding increase in caloriiic efficiency. To provide pure air for a possible excess of oil or Lfslobberings" due to inaccurate adjustment of the oil-inlet, the by-pass 16 is formed in the mixing-chamber. The upper end of this by-pass begins above the oilinlet, and the lower end or outlet terminates adjacent to the discharge-opening 3.

In operation the oil-pressure is quite small, and the air-current assists in drawing in the oil. The lateral adjustment of the cone 6 is effected, as already described, while the longitudinal adjustment is accomplished by turning the cone-stem up or down in its threaded bearing. It is obvious that if the cone is lowered from the full-line position of Fig. l to the dotted-line position in the same figure the area between the cone and edge of the discharge opening will be greatly increased, while the movement in the opposite direction will have the reverse effect. The longitudinal adjustment of the cone 6 not only regulates the volume of flame, but also controls its length and enables the hottest adjustment of the cone results in such a latitude of movement of the flame that the hot portion thereof can readily be brought to the position on the work in which it will be the most effective, and thus result in a highly efficient burner.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a liquid-fuel burner, in combination, a mixing-chamber having an air-inlet and a discharge-opening, an oil-inlet, a cone placed in said discharge-opening with its apex extending inwardly, a vertically-extending offset cone-stem arranged eccentrically with respect to the discharge-outlet for supporting said cone, the cone-stem being located directly in the path of and closely adjacent to the discharge-orifice of the said oil-inlet and thereby constituting means down which the oil flows by gravity upon the apex of said cone, and means for turning -said cone-stem for regulating the extent of opening at any desired position in the discharge-opening, substantially as and for the purpose specified.

2. In a liquid-fuel burner, in combination, a mixing-chamber having an air-inlet and discharge-opening, an oil-inlet, a cone arranged in said discharge opening, a conestem for supporting same, said conestem serving to conduct the oil from the oil-inlet to said cone, and a by-pass for the air leading from a position in the air-inlet above the oil- 'inlet to the discharge-outlet at a point below the cone, substantially as and for the purpose specified.

JOSEPH R. RUSSELL.

Witnesses:

MARGARET A. SWEENEY, J. C. WARNEs.

This longitudi- 

